<?php
/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Validate
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: FilesSize.php 24593 2012-01-05 20:35:02Z matthew $
 */
/**
 *
 * @see Zend_Validate_File_Size
 */
require_once 'Zend/Validate/File/Size.php';

/**
 * Validator for the size of all files which will be validated in sum
 * @category Zend
 * @package Zend_Validate
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
class Zend_Validate_File_FilesSize extends Zend_Validate_File_Size {

    /**
     * @const string Error constants
     */
    const TOO_BIG = 'fileFilesSizeTooBig';

    const TOO_SMALL = 'fileFilesSizeTooSmall';

    const NOT_READABLE = 'fileFilesSizeNotReadable';

    /**
     *
     * @var array Error message templates
     */
    protected $_messageTemplates = array(self::TOO_BIG => "All files in sum should have a maximum size of '%max%' but '%size%' were detected", self::TOO_SMALL => "All files in sum should have a minimum size of '%min%' but '%size%' were detected", self::NOT_READABLE => "One or more files can not be read");

    /**
     * Internal file array
     * @var array
     */
    protected $_files;

    /**
     * Sets validator options
     * Min limits the used diskspace for all files, when used with max=null it is the maximum filesize
     * It also accepts an array with the keys 'min' and 'max'
     * @param integer|array|Zend_Config $options Options for this validator
     * @return void
     */
    public function __construct ($options) {
        $this -> _files = array();
        $this -> _setSize (0);
        if ($options instanceof Zend_Config) {
            $options = $options -> toArray ();
        } elseif (is_scalar ($options)) {
            $options = array('max' => $options);
        } elseif ( ! is_array ($options)) {
            require_once 'Zend/Validate/Exception.php';
            throw new Zend_Validate_Exception ('Invalid options to validator provided');
        }
        if (1 < func_num_args ()) {
            $argv = func_get_args ();
            array_shift ($argv);
            $options['max'] = array_shift ($argv);
            if ( ! empty ($argv)) {
                $options['bytestring'] = array_shift ($argv);
            }
        }
        parent::__construct ($options);
    }

    /**
     * Defined by Zend_Validate_Interface
     * Returns true if and only if the disk usage of all files is at least min and
     * not bigger than max (when max is not null).
     * @param string|array $value Real file to check for size
     * @param array $file File data from Zend_File_Transfer
     * @return boolean
     */
    public function isValid ($value, $file = null) {
        require_once 'Zend/Loader.php';
        if (is_string ($value)) {
            $value = array($value);
        }
        $min = $this -> getMin (true);
        $max = $this -> getMax (true);
        $size = $this -> _getSize ();
        foreach ($value as $files) {
            // Is file readable ?
            if ( ! Zend_Loader::isReadable ($files)) {
                $this -> _throw ($file, self::NOT_READABLE);
                continue;
            }
            if ( ! isset ($this -> _files[$files])) {
                $this -> _files[$files] = $files;
            } else {
                // file already counted... do not count twice
                continue;
            }
            // limited to 2GB files
            $size += @filesize ($files);
            $this -> _size = $size;
            if (($max !== null) && ($max < $size)) {
                if ($this -> useByteString ()) {
                    $this -> _max = $this -> _toByteString ($max);
                    $this -> _size = $this -> _toByteString ($size);
                    $this -> _throw ($file, self::TOO_BIG);
                    $this -> _max = $max;
                    $this -> _size = $size;
                } else {
                    $this -> _throw ($file, self::TOO_BIG);
                }
            }
        }
        // Check that aggregate files are >= minimum size
        if (($min !== null) && ($size < $min)) {
            if ($this -> useByteString ()) {
                $this -> _min = $this -> _toByteString ($min);
                $this -> _size = $this -> _toByteString ($size);
                $this -> _throw ($file, self::TOO_SMALL);
                $this -> _min = $min;
                $this -> _size = $size;
            } else {
                $this -> _throw ($file, self::TOO_SMALL);
            }
        }
        if (count ($this -> _messages) > 0) {
            return false;
        }
        return true;
    }

}
